Rose Mosaic Quilt Block

The rose mosaic quilt block is another beauty using half rectangle triangles – as well as half square triangles. I feel that if I had used more muted colours it might have had the look of the Peace rose, one of my favourites.

I have made it here as an 18″ square finished size.

Cutting requirements for the rose mosaic quilt block

3.1/2″ squares: eight orange

3.7/8″ squares: four each in red and orange, two each in red and white

3.7/8″ by 6.7/8″ rectangles: four brown, four white

Make half square triangles

Making the rose mosaic quilt block

Use the 3.7/8″ squares to make half square triangles in the colour combinations listed above. Place two squares with right sides together and mark a line along the diagonal. Sew a 1/4″ seam either side of the marked line and cut along the line. This will produce two half square triangle units. You need these in red/orange and in red/white.

Make half rectangle triangles

You will also need half rectangle triangles for this block. Cut the rectangles along one diagonal to create two triangles.. Match up each brown triangle with a white triangle to re form a rectangle. Sew the two triangles together to form a half rectangle triangle unit.

First stage of layout

The first stage of the layout is shown on its own for clarity. There are five four patch units – one in the middle and one in each corner. There are four red/white half square triangles in the middle. In each corner there are two orange squares with two red/orange half square triangles.

The corner square itself is an orange square and the half square triangles are placed either side of this to give the shape of a red butterfly straddling the corner.

Rose mosaic quilt block layout

The half rectangle triangle units are now added in pairs along each edge of the central square. They are placed so that the two white triangles combine to form a larger white triangle pointing towards the middle.

Sew together in sections

Sew the half rectangle triangles into pairs and sew the squares of the four patch units together. You will now have three rows of three squares. Sew the squares together across each row and then sew the rows to each other to complete the rose mosaic quilt block.

Rose mosaic quilt image

For a quilt idea I have shown sixteen blocks sewn together in four rows of four.